逻辑求助！

yunyunliz

经过很久的琢磨 有几个题目我怎么也没想通 特求助八方大侠！最好给点详细的解释！

1.参考答案C
IN the past year,there has been a large drop in the number of new cars sold,due to harsh economic conditions in the
marketplace and high taxes.At the same time ,the average price paid for a new car has risen dramatically.
which of the following,if true,best explains the increase in the average price of a new car?
A.The price of used cars has climbed steadily over the past ten years.
B.There will be a tax reduction later in the year which is expected to aid moderate and low income families
C.The market for expensive cars has been unaffected by the current economic conditions
D.Economic conditions are expected to get signigicantly worse before the edn of the year
E.Low demand for trucks and vans has led to lower production in the factories

2.参考答案A我选C
Critics of sales seminars run by outside consultants point out that since 1987,revenues of vacuum cleaner companies whose employees attended consult ant-led seminars were lower than revenues of vacuum cleaner companies whose employees did not attend such seminars.The critics charge that for vacuum cleaner companies,the sales seminars are ill conceived and a waste of money.
Which of the following,if true,is the most effective challenge to the critics of sales seminars?
A.Those vacuum cleaner companies whose sales were highest prior to 1987 are the only companies that did not send employees to the seminars.
B.Vacuum cleaner companies that have sent employees to sales seminars since 1987 experienced a greater drop in sales than they had prior to 1987.
C.The cost of vacuum cleaner sales seminars run by outside consultants has risen dramatically since 1987.
D.The poor design of vacuum cleaner sales seminars is not the only reason for their ineffectiveness.
E.Since 1987,sales of vacuum cleaners have risen twenty percent.

3.参考答案为E，我选C。
Each increase of 1 percent in real disposable personal income per capita will increase the share of the electorate for an incumbent by about 2.2 percentage points,other things being equal.Since 1952 there has been a decline in real disposable income during only one presidential election year.The incumbent lost that elecion.
Which of the following conclusions can be properly drawn from the statements above?
A.When an incumbent runs for office,he or she is likely to win.
B.Political parties should take care to put forth a candidate who seems prosperous.
C.Presidential candidates should put their greatest efforts into improving their public image.
D.Because a presidential campaign requires the expenditure of large amouts of money,it frequently impoverishes a candidate and his or her supporters.
E.The outcome of a presidential election is substantially affected by factors other than the ideological positions of the candidates.

cynthia1226

第1题很明显ABDE都是无关选项，C说高价位的车销量不变而总销量减少，所以单价就提高了
第2题A的意思是，在1987年以前，不参加SIMINAR的公司销量已经是最好的了，所以不是因为SIMINAR所以销量才不好，我觉得是这个意思。。。。
第3题E说除了候选者的党派意识之类的因素，别的因素也会影响总统选举，就是题目说的real disposable personal income per capita，得出结论的题要完全依靠题干信息，千万不要想太多。而且public image 范围太广了，像这样的选项在CR里一般都不会是对的